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Microwave influence on phase transformations in nanostructured alumina has been investigated in a comparative study. It has been found that microwave heating results in a lower phase transformation temperature, not affecting other features of the phase transformation process such as grain size and the effect of dopant addition. For the first time, the dependence of the effect on microwave intensity has been characterized quantitatively. Unexpectedly, this dependence turns out to be non-monotonic, and the phase transformation rate reaches its maximum when moderate-intensity microwaves are used for heating.

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In this work, a fluidized bed process for microwave plasma assisted CVD of metals, metal carbides and metal nitrides on carbon and graphite materials is presented. Boron coated graphite produced in this reactor was found to show increased specific capacity and electrical conductivity compared to uncoated graphite when used as anode in lithium ion-battery. Parameters for uniform coating of carbon fibers with aluminum based ceramics were found for decomposition of trimethylaluminum precursor in a microwave plasma.